Comparison of hot deformation behavior of superalloys INCONEL 600 and INCOLOY 825

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F19%3A10243688" target="_blank" >RIV/61989100:27360/19:10243688 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Comparison of hot deformation behavior of superalloys INCONEL 600 and INCOLOY 825
Original language description
On the hot deformation simulator HDS-20 uniaxial compression tests of two nickel superalloys supplied in the molded state were performed. The cylindrical specimens were heated at rate of 10 oC.s-1 directly to the deformation temperature (i.e. from 880 oC to 1,240 oC with dwell time of 180 s after heating) and then were compressed at a constant strain rate of 0.1 s-1, 2 s-1 or 30 s-1 to a true strain of 1.0. Both materials exhibit a similar true stress-true strain curve with a relatively strong peak signalling the initiation of dynamic recrystallization. From the peak stress, the values of hot deformation activation energy were calculated, namely 483 kJ mol-1 for Inconel 600 and 601 kJ mol-1 for Incoloy 825. With the knowledge of these variables, equations describing peak stress could be derived for both superalloys (known sinus hyperbolic relation) with good accuracy. It corresponds to the peak strain (power dependence) depending on the Zener-Hollomon parameter, which represents the temperature-compensated strain rate. These dependencies and experimental data were mathematically and graphically compared for both materials. Peak stress is the amount appropriate for simple and fast prediction of the maximum flow stress due to the deformation parameters, excluding the effect of strain.
Czech name
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Czech description
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Project
<a href="/en/project/EF17_049%2F0008399" target="_blank" >EF17_049/0008399: Development of inter-sector cooperation of RMSTC with the application sphere in the field of advanced research and innovations of classical metal materials and technologies using modelling methods</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
METAL 2019 : conference proceedings : peer reviewed : 28th International Conference on Metallurgy and Materials : May 22nd-24th 2019, Hotel Voronez I, Brno, Czech Republic, EU
ISBN
978-80-87294-92-5
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
444-449
Publisher name
Tanger
Place of publication
Ostrava
Event location
Brno
Event date
May 22, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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